Documentation for MonoBehaviour.OnTriggerStay just says that “OnTriggerStay is called once per frame” which is wrong as it’s called once per physics update. Collider.OnTriggerStay says that it is called almost all the frames and I think while it’s better still not good as you cannot know players framerate atleast on PC. Then Note in there is good and finally tells what developer needs to know which should maybe be told right away at description.
Thanks Kossuranta, I’ll get a bug reported for the docs team.